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Finding the Fourth Proportional to 2,165.62, 3,248.75 and 626.42

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Solution

The fourth proportional to 2,165.62, 3,248.75 and 626.42 is: 939.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.62 : 3,248.75 = 626.42 : x
  2. Step 2: Convert to fraction form
    2,165.62/3,248.75 = 626.42/x
  3. Step 3: Cross multiply
    2,165.62x = 3,248.75 × 626.42
  4. Step 4: Simplify right side
    2,165.62x = 2,035,081.98
  5. Step 5: Solve for x
    x = 2,035,081.98/2,165.62
  6. Step 6: Final answer
    x = 939.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.